---
product_id: 1871288
title: "Smooth Cast 65D - Semi-Rigid Urethane Casting Resin - Pint Unit"
brand: "smooth-on"
price: "$U3429"
currency: UYU
in_stock: true
reviews_count: 13
category: "Smooth On"
url: https://www.desertcart.uy/products/1871288-smooth-cast-65d-semi-rigid-urethane-casting-resin-pint-unit
store_origin: UY
region: Uruguay
---

# 15 min full cure time low viscosity for bubble-free casting semi-rigid with impact & abrasion resistance Smooth Cast 65D - Semi-Rigid Urethane Casting Resin - Pint Unit

**Brand:** smooth-on
**Price:** $U3429
**Availability:** ✅ In Stock

## Summary

> 🛠️ Cast like a pro, create like a visionary!

## Quick Answers

- **What is this?** Smooth Cast 65D - Semi-Rigid Urethane Casting Resin - Pint Unit by smooth-on
- **How much does it cost?** $U3429 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/1871288-smooth-cast-65d-semi-rigid-urethane-casting-resin-pint-unit)

## Best For

- smooth-on enthusiasts

## Why This Product

- Trusted smooth-on brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Fast-Track Creativity:** Full cure in just 15 minutes means rapid prototyping and faster project turnaround.
- • **Vibrant Customization:** Easily tint with SO-Strong or Ignite pigments to create eye-catching, personalized colors.
- • **Bubble-Free Brilliance:** Low viscosity formula minimizes bubble entrapment for flawless finishes every time.
- • **Durable Semi-Rigid Strength:** Balances flexibility and toughness with excellent impact and abrasion resistance.
- • **Effortless Roto-Casting Mastery:** Unique gradual cure profile perfect for hand or machine rotational casting.

## Overview

Smooth-Cast 65D is a low-cost, semi-rigid urethane casting resin designed for rotational casting with a unique gradual cure profile. Its low viscosity ensures minimal bubbles, while its durable semi-rigid finish offers excellent impact and abrasion resistance. Compatible with vibrant color tints, it fully cures in 15 minutes, making it ideal for prop makers and creatives seeking fast, high-quality results.

## Description

Smooth-Cast® 65D, Trial Size, 1.9lb

Review: Perfect for Starter Propmaker - To make this simple, the product is easy enough for a beginner propmaker with next to no experience/knowledge. Easy 1:1 ratio mixing, the resin is easy to roto cast, and hardens to a solid product. I am finally casting my own helmets and I couldn’t be more pleased with the quality. DISCLAIMER: the helmets I casted using this product have slight defects in them because of a mistake made on my end of making the silicone mold. If you’re silicone mold is done right, your castings will come out perfect, if not close to. Happy casting fellow propmakers! Please check out my social media for more pics and such, TheInFamousRebel on all social media apps.
Review: Excellent casting resin! - Absolutely LOVE this stuff! I used it for the first time to cast some pauldrons for a cosplay costume. I am totally hooked!! It works EXACTLY as advertised. Mix, pour/slosh, and get results in minutes. Smooth On has helpful Youtube videos to show how to use their products. I highly recommend this casting resin and have already bought more!!

## Features

- unique gradual cure profile that makes it ideal for rotational casting applications ("roto-cast") in a machine or by hand.
- Low-cost semi-rigid urethane casting resin
- Low viscosity for minimal bubble entrapment
- Semi-rigid plastic has good impact and abrasion resistance
- Vibrant colors are possible by adding SO-Strong color tints or Ignite color pigments.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00E3ZJ9XW |
| Best Sellers Rank | #45,955 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #440 in Sculpture Molding & Casting Products |
| Brand | Smooth-On |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (588) |
| Date First Available | July 23, 2013 |
| Full Cure Time | 15 Minutes |
| Global Trade Identification Number | 00751635429413 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 16.9 Fluid Ounces |
| Item Weight | 2 pounds |
| Item model number | 88559 |
| Manufacturer | Smooth-On, Inc. |
| Material | Urethane |
| Number of Pieces | 1 |
| Package Information | Bottle |
| Product Dimensions | 6 x 3 x 6 inches |
| Specific Uses For Product | Interior |
| UPC | 751635429413 |
| Unit Count | 1.0 Count |
| Viscosity | Low |
| Viscosity Level | Low |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** Smooth-On
- **Color:** Black
- **Item Form:** Liquid
- **Material:** Urethane
- **Specific Uses For Product:** Interior

## Images

![Smooth Cast 65D - Semi-Rigid Urethane Casting Resin - Pint Unit - Image 1](https://m.media-amazon.com/images/I/7193f-zWhPL.jpg)

## Questions & Answers

**Q: Will this withstand outside elements after coating and primer and painted?**
A: Yes, my parents have a statue I jade from this in their garden for the last 5 years, no problems.

**Q: After its cured, can you prime and paint it?**
A: Yep, it's just like normal plastic.

**Q: I'm making a close-fitting helmet that needs to be flexed slightly to put on/take off, would the 65D stand up to such use?**
A: Depends on the thickness/size/shape but it is a pretty flexible but rigid material.

**Q: Does this product require degassing?**
A: No, just mix 1:1 ratio and use; my experience- pot life is shorter then stated for the mixture

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for Starter Propmaker
*by L***M on March 5, 2020*

To make this simple, the product is easy enough for a beginner propmaker with next to no experience/knowledge. Easy 1:1 ratio mixing, the resin is easy to roto cast, and hardens to a solid product. I am finally casting my own helmets and I couldn’t be more pleased with the quality. DISCLAIMER: the helmets I casted using this product have slight defects in them because of a mistake made on my end of making the silicone mold. If you’re silicone mold is done right, your castings will come out perfect, if not close to. Happy casting fellow propmakers! Please check out my social media for more pics and such, TheInFamousRebel on all social media apps.

### ⭐⭐⭐⭐⭐ Excellent casting resin!
*by K***Y on August 3, 2025*

Absolutely LOVE this stuff! I used it for the first time to cast some pauldrons for a cosplay costume. I am totally hooked!! It works EXACTLY as advertised. Mix, pour/slosh, and get results in minutes. Smooth On has helpful Youtube videos to show how to use their products. I highly recommend this casting resin and have already bought more!!

### ⭐⭐⭐⭐⭐ cures fast, hard, and solid
*by B***N on November 18, 2020*

this product is great. it cures very hard and solid, so if you are looking for something with a little more flexibility to it, then another product might work better. But it is very fast and I've had great results with it!

## Frequently Bought Together

- Smooth-On - Smooth-Cast™ 65D Semi-Rigid Urethane Casting Resin - Trial Size Unit
- Mold Star 15 Slow - 1A:1B Mix by Volume Platinum Silicone Rubber - Pint Unit
- Smooth-On Universal™ Mold Release Spray, 14 fl. oz. Aerosol Can

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-20*